Circular 19: National Topographic Map Symbols at 1:2,000, 1:5,000 Scale

Currently, the national topographic maps at scales 1:2,000 and 1:5,000 are maps that depict the characteristics of topography, physical features, boundaries, and place names on land, islands, and archipelagos, constructed according to national technical standards and regulations at scales 1:2,000 and 1:5,000 in the national coordinate system and national elevation system for unified use across the country.

Illustration (source: internet)

The symbols for the national topographic maps at scales 1:2,000 and 1:5,000 are detailed in Appendix 2 issued together with Circular 19/2019/TT-BTNMT. The symbols for the national topographic maps at scales 1:2,000 and 1:5,000 are designed and used according to the following principles:

- Length units (dm, cm, mm) and area units (dm², cm², mm²) are the sizes measured on the map. Meter units (m) or square meters (m²) are the actual sizes of the geographic objects.

- The sizes and line weights of the symbols are annotated beside the symbols in millimeters. If the line weight is not annotated, the conventional line weight is 0.1 mm. Half-scale symbols only annotate the prescribed sizes for the non-scale parts; the remaining parts are drawn to the map scale. Uniformly distributed area symbols should be drawn similar to the sample if not otherwise specified; if specified, they must be drawn according to the specification. When the area of the represented object is smaller than 1 cm², it is permissible to reduce the distance between symbols but not more than 70% compared to the specification in the symbol sample, provided that the readability and clear distinction of the geographic object remain ensured.

- The font size specified in the symbols is the font size when printed on paper, measured in points (pt).

- The symbols for the national topographic maps at scales 1:2,000 and 1:5,000 are designed in the CKMY color system, with the color chart detailed in Appendix 1 issued together with this Circular.

See the full text of the regulation at Circular 19/2019/TT-BTNMT, effective from January 23, 2020.

Thu Ba

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